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New Biosensor Can Detect Bacteria Instantaneously

A research group from the Rovira i Virgili University (URV) in Tarragona has developed a biosensor that can immediately detect very low levels of Salmonella typhi, the bacteria that causes typhoid fever. The technique uses carbon nanotubes and synthetic DNA fragments that activate an electric signal when they link up with the pathogen.

"We have developed a new biosensor that can detect extremely low concentrations of bacteria immediately, easily and reliably," says F. Xavier Rius, lead author of the study and a professor in the Chemometrics, Qualimetrics and Nanosensors research group in the Analytical Chemistry and Organic Chemistry Department of the URV.

Rius' team, jointly led by Jordi Riu, has come up with a technique that can detect extremely low levels of the bacteria Salmonella typhi, which causes typhoid fever. This new biosensor functions using a method, described this month in the scientific journal Angewandte Chemie International Edition, which involves carbon nanotubes with inbuilt aptamers providing electrochemical readings.
 
 

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